River Flood Maps (FRM_FH_RIVER_EXTENT_M)

The following probabilities are available for river flooding: - High - 10 year return period - Medium - 200 year return period - Low - 1000 year return period and 200 year return period plus climate change using the UKCP09 high emissions scenario for the 2080s.The river hazard maps show (where available): - Flood extent - Flood depth - Flood velocities where appropriate. The climate change scenario has been defined by United Kingdom Climate Projection 2009 (UKCP09) predictions for 2080 high emissions 95%ile predictions. Medium and low probability flood events were selected for consistency with return periods used in Scottish Planning Policy, whereas the high probability was chosen as it is reflective of observed events experienced over the last few decades.本次可获取的河流洪水概率分级如下： - 高概率：10年重现期洪水 - 中等概率：200年重现期洪水 - 低概率：1000年重现期洪水，以及基于英国气候预测2009（United Kingdom Climate Projection 2009, UKCP09）高排放情景、针对2080年代的气候变化修正后的200年重现期洪水。 河流灾害地图将展示（如可获取）以下内容： - 洪水淹没范围 - 洪水水深 - 适宜场景下的洪水流速 本研究所采用的气候变化情景，基于英国气候预测2009（UKCP09）针对2080年高排放情景下95%分位数的预测结果。为贴合苏格兰规划政策中所采用的重现期标准，本次选取了中等与低概率洪水事件；而高概率洪水事件的选取则依据近数十年间实际观测到的洪水灾害特征。